Valve bag filling machine



Aug. 11, 1931.

3 Sheets-Sheet l Filed Oct. 29, .1929

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KW. R. PETERSON VALVE BAG FILLING MACHINE Filed out. 29. 1929 3Sheets-Sheet 2 v Allg. ll, 14931. w, R PETERSON 1,818,095

VALVE BAG FILLING MACHINE Filed oct. 29. 1929 s sheets-sheet 3 i in Infront of casin a filling spout 19 which normally registers l enter a.valve opening 1n a.

Patented Aug. 11, 1931 UXNITED STATES WILLIAMB.

`lnvrENT OFFICE PETERSON, F CHICAGO; ILLINOIS, ASSIGNOR T0 ST. EMISPAPER COM- PANY, 0F NEW YORK,N. YL, A CORPORATION 0F NEW YORK vALvE BAGFILLTNG 'MACHINE Application nled October v29, 1929. Serial No. 403,300.

`This application relates to a valve bag fill- `ing machine and morearticularly to sucha machine in which the ag support is automaticalltilted to discharge the bag after the ba llas received a sufficientcharge. Details o the invention will appear as the description proceeds.f

In the accompanying drawings forming a part of this application, Figure1 is a side elevation of a portion of a machine embodying thisinvention, parts being broken away and parts being shown in sectionforpurposes of illustration; Fi 2 is a'front elevation of a portion ofthe evice shown in Fig. l; Figs. 3, 4 and 5 are views of the tripplngmechanism and related parts 1n different positions.' 0

The apparatus shown is provided wlth a casing from which a centrifugalpropeller is ada ted to discharge material through a disc arge openin11. Al ate 12 closes the discharge opening tween t e fillof successivebags.

10 there. is mounted a frame comprising si e bars 13 mounted upon forksof a scale beam 14. A cross lpiece 15 between the side bars 13 isprovided with ears 16 in which there is mounted a pivot pin 17. Uponthis pivot pin there is a carrier 18 for with discharge opening 11 `andis adapted to tag 20.

Cross bar 15 also carries pivot 21 .upon which there is pivoted a latch22 carrylng a plate 23 adapte to engage a plate 24 on carrier 18 andmaintain carrier 18 in horizontal position.

Cross bar -25 units the forward sldes of bars 13 and carries a. pivot 26on which there is mounted a locking device-27 adapted to engage thetopof bag 20 and h old 1t upon spout 1.9. Y

Connected to the lower end of gate 12 there is a frame 28-pivoted at itsuplper end to a.,

lever 29. Sprlng 30 connects t e lower'end of the lever with agfixedpin31 on the stationary frame of the apparatus and constantly tends to liftthe gate frame and closeJ the gate. The upper end of lever 29 carnes a."f pivoted catch 32 adapted to engage a wear plate 33 on a latch 34pivoted to the fixed frame at 35. Catch 32 is pivoted at 36 on the endof lever 29 and is normally held in the position inl which it is shownin Fi re 1 by a spring 37. The outer end of lato 34 carries a catch 38pivoted thereon at 39 a'nd Anormally held in the position in which it isshown in Figure 1 by spring 40. When in this position catch 38 restsupon a wear plate 41 attached to a cross -plate 43 mounted on the upperends of bars 13.

The upper ends of bars 13 are united and are connected by a link 44 withthe stationary frame so that bars 13 move u ward and downwardsubstantially vertical y.

A support 45 for the bottom of the bag is pivoted at 46 on the lowerends of bars 13. Links 47 connect bottom support 45 with arms 48extending forward from carrier 18. Springs 49 extend from arms 48 topins 50 mounted on cross piece 15 and normally raise the bottom andspout to the position in which they are shown in Fi re 1.

A handle 51 is pivoted to a fixed portion of the frame and carries aro1ler52 adapted to engage a wear plate 53 on lever 29 and depress thelever and gate frame and thereby open the gate and permit material to bedisc arged into the bag.

On the end of lever 29 there is an ear 53 adapted to engage a roller 54on member 22. Another roller 55 on the upper end of member 22is adaptedto engage an up r extension 56 on locking member 27 un er certainconditions. Block 57 on lever 29 is adapted to engage a cushion block 58mounted on the stationary frame in order to cushion the blow of thelever when the gate is closed'.

The operation of the device is as follows. With a bag positioned on thefilling device as until the weight of the material in the bag issuicient to cause oscillation of the scale beam, 'whereupon the bag andframe carrying it will be lowered until catch38 slips 0E of wear plate41. This allows wear plate 33 to rise sufficiently to release catch 32,whereupon spring 30 oscillates lever 29 and raises frame 28 and gate11,thereby shutting oil.

the flow of material to the bag. When lever 29 is oscillated ear 53engages roller 54 and swings member 22. As member 22 swings, rollercontacts upward extension '56 of locking device 27 and releases thislocking device from the bag. At the same time plate 23 is lifted out ofengagement with plate 24 so that carrier 18 is released. The position ofthe parts during the upward movement of ear 23 is indicated in Fig. 4.

After the bag is discharged, springs 49 return the carrier and bottomsupport to the position in which it is shown in Figs. 1 to 4. While inthe position in which the device is shown in Fig. 4, another bag isplaced upon the filling spout and thereafter handle 51 is depressed, asindicated in Fig. 3. When the handle is thus depressed, member 22 isswung to the position in which it is shown in Figure 3 by spring 59 sothat the spout and bottom support are held in horizontal position untila ain released by the downward movement o the bag.

A spring connected to an ear 61 on the latch 34 and to pin 31 on theframe overcomes the weight of the outer end of the latch member landnormally raises thisy member slightly higher than the position in whichit is shown in Figures 1 and 3 to the positlon in which it is shown inFigure 5. When the lower end of lever 29 is depressed, spring 37 allowscatch 32 to yield as it moves to the right past wearv plate 33, but whenhandle 51 is released the movement to the left of the upper end of lever29 is stopped by the engagement of catch 32 with plate 33 and thereforethe gate remains open until released once more in the manner describedabove.

2. In a device for filling valve bags, a

spout adapted to enter the valve of a bag, a clamp adapted to lock thevalve upon the spout, pivotal means upon which the spout is mounted, alatch adapted normally to maintain the spout in horizontal position,-said latch being adapted to engage and release said clamp when the latchismoved to release the spout, a gate adapted to control the low ofmaterial through said spout, a weighing device, means for automaticallyclosing the gate in response to the weighing device, and means connectedwith the closing means for the gate for moving said latch in releasingdirection.

3. Apparatus for filling valve bags comprising discharge means having adischarge orifice, a gate for controlling the orifice, means to open andclose the gate, a spout adapted to enter the valve of the bag andpivoted adjacent said orifice, a spring adapted to raise said spoutnormally to approximately horizontal position, a latch normally holdingsaid spout in horizontal position, and means connected with said ate forreleasing the latch when the gate 1s closed.

4. Apparatus for filling valve bags comprising discharge means having adischarge orifice, a gate for controlling the orice, spring meanstending constantly to close the gate and power means for opening thegate, a spout adapted to enter the valve of the bag and pivoted adjacentsaid orifice, a spring adapted to raise said spout normally toapproximately horizontal position, a latch normally holding said spoutin horizontal position, and means connected with said ate or releasingthe latch when the gate is c osed.

5. Apparatus for filling valve bags comprising discharge means having adischarge orifice, a gate for controlling the orifice, means to open andclose the gate, 4a spout adapted to enter the valve of the bag andpivoted adjacent said orifice, a spring adapted to raise said spoutnormally to approximately horizontal position, a latch normally holdingsaid spout in horizontal position, means connected with said gate forreleasing the latch when the gate is closed, a bottom support for thebag pivoted at one side thereof, and a link connecting the bottomsupport with the filling spout whereby the spout and support tilttogether.

In testimony whereof I have hereunto signed my name to thisspecification.

VVLLLIAM R. PETERSON.

DISCLAIMER 1,818,095.-W'illiam RQPeterson, Chic o, Ill. VALVE BAGFILLING MACHINE.-

Patent dated August- 11, 1931. Disc aimer filed July 31, 1933, by thepatentes,

assignee, St. Regis Paper Company, assenting and confirming.

Hereby enters this disclaimer to the 4word power v in claim 4 in thesaid Letters Patent. l

[Qfm'al Gazette August 29, 1.983.]

